In Situ Switch Blade Displacement Measurements in A Railway Turnout for Short-Term Monitoring Application

Mehrzad, Kaveh; Ataei, Shervan

doi:10.22034/IJRRS.2023.6.1.3

In Situ Switch Blade Displacement Measurements in A Railway Turnout for Short-Term Monitoring Application

Document Type : Industrial Case Study

Authors

Kaveh Mehrzad ¹

Shervan Ataei ²

¹ Avand Barzin Knowledge Enterprise, Tehran, Iran

² School of Railway Engineering, Iran University of science and technology, Tehran, Iran

10.22034/IJRRS.2023.6.1.3

Abstract

Due to the importance of the fundamental role of turnouts in network operations and their higher vulnerability than other assets, turnout condition monitoring is necessary for reliability-centered maintenance. Along with periodic visual inspections, real-time infrastructure condition detection can help introduce the structure's performance so that infrastructure maintenance is more reliable. A new approach for railway turnout pass-by condition detection is provided based on statistical process control (SPC) of damage-sensitive features (DSF) using switchblade lateral displacement (BLD) measurements. BLD time series data is modeled using a neural network model to extract DSF. This approach is applied to 33 passenger trains. The results of the proposed approach are validated by analysis of BLD and switch rod force sensor outputs. This method can be applied in turnout short-term condition monitoring for condition detection, leading to preventive maintenance, proper track operation management, and increased reliability.

Keywords

Blade displacement

Condition monitoring

Reliability centered maintenance

Railway turnout

Switch panel

Subjects

Case Studies Related to Reliability, Risk and Safety

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